You might get faster, or better, answers by posting the full and exact
text of your session so that others might try to reproduce the problem.
You might also tell us what *version* of Solaris you are running. There
are at least three versions in more or less common use: Solaris 8, 9,
and 10. Each of those major versions had a few hundred (a few
thousand??) patches.
Posting the contents of /etc/release would be a good start.